This diff re-enables `E2E/miniooni.bash`. To make it working properly, we
needed to figure out which were the right cloudfronts to use.
I looked into the configuration and determined that both cloudfronts
should be used because they basically map to the same host.
I also determined it was backwards to test a mixture of prod and testing
APIs, and probably also flaky. So, I choose to only test the prod.
Additionally, I added support for testing all supported tunnels.
Closes https://github.com/ooni/probe/issues/2336
0fc5d0e904